SOSE was a prophetic Oreiad or Naiadnymph of Arkadia (southern Greece). According to one account she was the mother of the god Pan by Hermes.

Sose is similar to Penelopeia and Thymbris, two other Arkadian nymphai named as the mother of Pan in alternative accounts, and also the Dryad Erato, who like Sose was a highland prophetess. Erato's husband Arkas also shared the cradle of Hermes.

Nonnus, Dionysiaca 14. 67 ff (trans. Rouse) (Greek epic C5th A.D.) :
"Panes, the sons of Hermes, who divided his love between two Nymphai; for one he visited the bed of Sose, the highland prophetess, and begat a son inspired with the divine voice of prophecy, [Pan] Agreus (the HUnter), well versed in the beast-slaying sport of the hunt."